As emotionally satisfying as it may be to make the scum to be executed suffer, it's not necessary and counterproductive.
Again, the fact that there is any controversy over methods of execution is because both sides apparently want the controversy to continue for their own reasons.
Yes, there are ways to be efficient. When I’ve had to put my pets down, they give one shot to put them out and the second to stop the heart. It is painless, quick and kind.
We needn’t wish for the suffering of the criminal. I have nothing but contempt and anger for the bastards, but despite how heinous they are, we are not like the criminal. It is vengeful and beneath us.